The date code on my 70 SS glass reads as follows rear quarter glass LT door glass LT4 . What year month day do these letters and numbers stand for.

The date would be March (L) 1970 (T)
Glass only had month and year coded.

Dave, How did GM date their glass? I thought A was Jan and so on but i:m confused how those letters represent the year. My LS6 has a 4D productin date so I guess the LT works according to your method.